摘要
为提高锡青铜钝化膜层的耐蚀性,在传统铜合金钝化液体系的基础上,利用正交试验法对钝化液组分进行了优化,并研究了工艺参数对钝化膜外观和耐蚀性的影响。所得最佳工艺条件为:150g/L重铬酸钾,15mL/L硫酸,1g/L氯化钠,室温,时间10～15s。结果表明,采用该工艺能获得外观艳丽、光亮,颜色均匀,附着力好的膜层,其点滴试验耐蚀性大于30s。
In order to improve the corrosion resistance of the passivation coating on tin bronze,the bath composition of the passivation liquid was optimized by orthogonal test based on traditional technology for passivation of copper.The effects of process parameters on the appearance and corrosion resistance of the passivation coating were investigated.As the results,the optimal bath composition was determined as 150 g/L K2Cr2O7,15 ml/L H2SO4,and 1 g/L NaCl,while the optimized process conditions were suggested as room temperature and time of 10～15 s.It was feasible to prepare bright and flamboyant passivation coatings with uniform color and good adhesion strength by adopting the optimized passivation technology,and no air bubbles were observed on the passivation coating after dropping test for 30 s.
出处
《材料保护》
CAS
CSCD
北大核心
2008年第7期71-72,共2页
Materials Protection
关键词
锡青铜
钝化
耐蚀性
tin bronze
passivation
passivation
corrosion resistance
